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ASTM A350 LF2 Flanges

Home|ASTM A350 LF2 Flanges

Manufacturer of LTCS SA 350 Lf2 Blind Flanges in China, At Lowest Price

ASTM A350 LF2 Flanges

Table of Content

Flanges-table

Supplier of Low Temperature Carbon Steel Flange in Zhejiang , View Lf2 Cl1 Vs Cl2 & Specification

ASTM A350 LF2 Flanges Specification

Flange Sizes

ASTM A105 Blind Flange Sizes

  • NPS: ½” to 48″
  • 15NB – 1500NB
  • PN 2.5 – PN 400
Flange Standards

ASTM A350 LF2 Weld Neck Flange Standards

  • ASME B16.5
  • ASME B16.47
  • ASME B16.36
Flange Schedule

LF2 Slip On Flange Schedule

  • SCH 160/ 180
  • SCH 120/ 140
  • SCH 60/ 80/ 100
  • SCH 10/ 20/ 40
Pressure Types

LF2 Material Weld Neck Flange Pressure Types

  • 1500# To 2500#
  • 600# To 900#
  • 125# To 400#
Testing Methods

ASTM A350 gr LF2 Socket Weld Flange Testing Methods

  • Hardness test
  • PMI test
  • Pressure
  • Tensile
Features

ASME SA 350 GR LF2 Plate Flange Features

  • Higher Strength
  • weldability
  • Durability
Flange Threads

ASTM A350 LF2 CL1 Weld Neck Flange Threads

  • BSPP
  • FNPT
  • NPT, MNPT
  • BSPT
Flanges Process

A350 LF2 Socket Weld Flange Process

  • Forging
  • Cutting
  • Rolling
  • Casting
Certificates

Certificates of A350 LF2 Weld Neck Flange

  • NACE MR0175
  • MTC BS EN 10204 3.1/ 3.2
  • 100% Radiography Test
  • Third Party Inspection
Density & Temperature

ASTM A350 LF2 WNRTJ flange Density & Temperature

  • Density : 20g/cm3
  • Forging Temp : 860 – 920°C
  • Melting Point : 650 ºF

flange Face

LF2 slip on flange Face

  • RF
  • RTJ
  • FF
  • T&G

Origin

ASTM A350 Gr LF2 Blind Flanges Origin

  • European
  • Japan
  • China
  • Indian
Advantages

A350 LF2 slip on welding flange Advantages

  • Strength
  • High Impact Strength
  • Ductility
Disadvantages

Disadvantages of ASTM A350 LF2 CL1 Plate Flange

  • temp Sensitivity
  • Maintainance
  • Low Temperatures

Types of ASTM A350 LF2 Flanges


ASTM A350 LF2 Flanges Supplier in China Provide Wide Range Of Flanges to satisfy customer needs

ASME SA 350 GR LF2 Flange

ASME SA 350 GR LF2 Flange

ASTM A350 LF2 CL1 Slip On Flange

ASTM A350 LF2 CL1 Slip On Flange

ASTM A350 LF2 Class 2 Plate Flange

ASTM A350 LF2 Class 2 Plate Flange

A350 LF2 Socket Weld Flange

A350 LF2 Socket Weld Flange

LF2 Lap Joint Flanges

LF2 Lap Joint Flanges

ASTM A350 LF2 CL1 Threaded Flange

ASTM A350 LF2 CL1 Threaded Flange

ASME SA 350 GR LF2 Orifice Flanges

ASME SA 350 GR LF2 Orifice Flanges

LF2 Material Weld Neck Flange

LF2 Material Weld Neck Flange

ASTM A350 Gr LF2 Spectacle Blind Flanges

ASTM A350 Gr LF2 Spectacle Blind Flanges


Dimension Chart Of ASTM A350 Gr LF2 Flanges

ASTM A350 LF2 Flanges Manufacturer In China Provides Multiple Range Of Dimensions Of Flanges

Dimension Chart Of ASTM A350 Gr LF2 Flanges

NPS O.D. of Flange Base dia Thick dia of RF Bore or dia Len Thru Hub Fillet Radius Bevel Dia Socket Depth
Lap Joint SORF, SWRF SWRF, SORF, NPT WN Lap Joint
O X Q R B W Y Y Y r H Z
2 6 3-1/16 3/4 3-5/8 2.46 2.44 1 2-1/2 1 5/16 2.38 11/16
2-1/2 7 3-9/16 7/8 4-1/8 2.97 2.94 1-1/8 2-3/4 1-1/8 5/16 2.88 3/4
5 10 6-7/16 15/16 7.5/16 5.69 5.66 1-7/16 3-1/2 1-7/16 7/16 5.56 15/16
14 21 15-3/4 1-3/8 16-1/4 14.18 14.14 2-1/4 5 3-1/8 1/2 14.00 1-5/8
1-1/2 5 2-9/16 11/16 2-7/8 1.97 1.95 7/8 2-7/16 7/8 1/4 1.90 5/8
3-1/2 8-1/2 4-13/16 15/16 5-1/2 4.10 4.07 1-1/4 2-13/16 1-1/4 3/8 4.00 7/8
8 13-1/2 9-11/16 1-1/8 10-5/8 8.75 8.72 1-3/4 4 1-3/4 1/2 8.63 1-1/4
3/4 3-7/8 1-1/2 1/2 1-11/16 1.11 1.09 5/8 2-1/16 5/8 1/8 1.05 7/16
20 27-1/2 22 1-11/16 23 20.25 20.20 2-7/8 5-11/16 4-1/16 1/2 20.00 2-1/8
1/2 3-1/2 1-3/16 7/16 1-3/8 .90 .88 5/8 1-7/8 5/8 1/8 .84 3/8
6 11 7-9/16 1 8-1/2 6.75 6.72 1-9/16 3-1/2 1-9/16 1/2 6.63 1-1/16
1 4-1/4 1-15/16 9/16 2 1.38 1.36 11/16 2-3/16 11/16 1/8 1.32 1/2
1-1/4 4-5/8 2-5/16 5/8 2-1/2 1.72 1.70 13/16 2-1/4 13/16 3/16 1.66 9/16
4 9 5-5/16 15/16 6-3/16 4.60 4.57 1-5/16 3 1-5/16 7/16 4.50 15/16
10 16 12 1-3/16 12-3/4 10.92 10.88 1-15/16 4 1-15/16 1/2 10.75 1-5/16
18 25 19-7/8 1-9/16 21 18.20 18.18 2-11/16 5-1/2 3-13/16 1/2 18.00 1-15/16
12 19 14-3/8 1-1/4 15 12.92 12.88 2-3/16 4-1/2 2-3/16 1/2 12.75 1-9/16
3 7-1/2 4-1/4 15/16 5 3.60 3.57 1-3/16 2-3/4 1-3/16 3/8 3.50 13/16
16 23-1/2 18 1-7/16 18-1/2 16.19 16.16 2-1/2 5 3-7/16 1/2 16.00 1-3/4
24 32 26-1/8 1-7/8 27-1/4 24.25 24.25 3-1/4 6 4-3/8 1/2 24.00 2-1/2

Bolt Chart Of ASTM A350 LF2 Class 2 Flat Flanges

  Class 150 Flanges Class 600 Flanges Class 300 Flanges
NPS Studs bolts Stud Len Dia of Bolts And Studs # Studs Bolts Stud Len Dia of Bolts And Studs # Studs, Bolts Stud Len Dia of Bolts And Studs
1/16 RF 1/4 RF 1/16 RF
3/4 4 2-1/2 0.50 4 3-1/2 0.63 4 3 0.63
3-1/2 8 3-1/2 0.63 8 5-1/2 0.88 8 4-1/4 0.75
2-1/2 4 3-1/2 0.63 8 4-3/4 0.75 8 4 0.75
1-1/4 4 2-3/4 0.50 4 3-3/4 0.63 4 3-1/4 0.63
1/2 4 2-1/4 0.50 4 3 0.50 4 2-1/2 0.50
1 4 2-1/2 0.50 4 3-1/2 0.63 4 3 0.63
20 20 6-1/4 1.13 24 11-1/4 1.63 24 8 1.25
14 12 5-1/4 1.00 20 9-1/4 1.38 20 7 1.13
6 8 4 0.75 12 6-3/4 1.00 12 4-3/4 0.75
10 12 4-1/2 0.88 16 8-1/2 1.25 16 6-1/4 1.00
8 8 4-1/4 0.75 12 7-1/2 1.13 12 5-1/2 0.88
1-1/2 4 2-3/4 0.50 4 4-1/4 0.75 4 3-1/2 0.75
3 4 3-1/2 0.63 8 5 0.75 8 4-1/4 0.75
2 4 3-1/4 0.63 8 4-1/4 0.63 8 3-1/2 0.63
4 8 3-1/2 0.63 8 5-3/4 0.88 8 4-1/2 0.75
16 16 5-1/4 1.00 20 10 1.50 20 7-1/2 1.25
12 12 4-3/4 0.88 20 8-3/4 1.25 16 6-3/4 1.13
18 16 5-3/4 1.13 20 10-3/4 1.63 24 7-3/4 1.25
5 8 3-3/4 0.75 8 6-1/2 1.00 8 4-3/4 0.75
24 20 6-3/4 1.25 24 13 1.88 24 9 1.50

A350 LF2 WNRF Flange Schedule Chart

Sizes Schedule
NPS O.D SCH 160 SCH 120 SCH 140 SCH 80 SCH 100 SCH 40 SCH 60 SCH 20 SCH 10 SCH 30
14 14 1.406 1.094 1.25 0.75 0.938 0.438 0.594 0.312 0.25 0.375
8 8.625 0.906 0.719 0.812 0.5 0.594 0.322 0.406 0.25 0.148 0.277
4 4.5 0.531 0.438 – 0.337 – 0.237 – – 0.12 –
3 ½ 4 – – – 0.318 – 0.226 – – 0.12 –
6 6.625 0.719 0.562 – 0.432 – 0.28 – – 0.134 –
20 20 1.969 1.5 1.75 1.031 1.281 0.594 0.812 0.375 0.25 0.5
18 18 1.781 1.375 1.562 0.938 1.156 0.562 0.75 0.312 0.25 0.438
12 12.75 1.312 1 1.125 0.688 0.844 0.406 0.562 0.25 0.18 0.33
5 5.563 0.625 0.5 – 0.375 – 0.258 – – 0.134 –
3 3.5 0.438 – – 0.3 – 0.216 – – 0.12 –
2 ½ 2.875 0.375 – – 0.276 – 0.203 – – 0.12 –
10 10.75 1.125 0.844 1 0.594 0.719 0.365 0.5 0.25 0.165 0.307
16 16 1.594 1.219 1.438 0.844 1.031 0.5 0.656 0.312 0.25 0.375
2 2.375 0.344 – – 0.218 – 0.154 – – 0.109 –
1 ½ 1.9 0.281 – – 0.2 – 0.145 – – 0.109 –
¾ 1.05 0.219 – – 0.154 – 0.113 – – 0.083 –
1 ¼ 1.66 0.25 – – 0.191 – 0.14 – – 0.109 –
1 1.315 0.25 – – 0.179 – 0.133 – – 0.109 –
½ 0.84 0.188 – – 0.147 – 0.109 – – 0.083 –

ASTM A350 LF2 CL1 Plate Flange Pressure Chart

Temp °C working pressures
75# 600# 150# 900# 300# 1500# 400#
−29~38 9.8 102.1 19.6 153.2 51.1 255.3 68.1
50 9.6 100.2 19.2 150.4 50.1 250.6 66.8
425 – 57.5 5.5 86.3 28.8 143.8 38.4
200 6.9 87.6 13.8 131.4 43.8 219.0 58.4
100 8.8 93.2 17.7 139.8 46.6 233.0 62.1
475 – 34.9 3.7 52.3 17.4 87.2 23.2
150 7.9 90.2 15.8 135.2 45.1 225.4 60.1
300 5.1 79.6 10.2 119.5 39.8 199.1 53.1
375 – 72.7 7.4 109.1 36.4 181.8 48.5
250 6.0 83.9 12.1 125.8 41.9 209.7 55.9
400 – 69.4 6.5 104.2 34.7 173.6 46.3
325 4.6 77.4 9.3 116.1 38.7 193.6 51.6
538 – 11.8 1.4 17.7 5.9 29.5 7.9
350 3.1 75.1 8.4 112.7 37.6 187.8 50.1
450 – 46.0 4.6 69.0 23.0 115.0 30.7
500 – 23.5 2.8 35.3 11.8 58.8 15.7

Gasket Chart ASME SA 350 GR LF2 Flange

NPS Inner.Dia. Outer.Dia.
Cl 150 Cl 600 Cl 400 Cl 300 Cl 900
8 8.62 11 12.625 12.00 12.125 14.125
3 3.50 5.375 5.875 5.875 5.875 6.625
1 1/2 1.91 3.375 3.75 3.75 3.75 3.875
2 2.38 4.125 4.375 4.375 4.375 5.625
10 10.75 13.375 15.75 14.125 14.25 17.125
5 5.56 7.75 9.50 8.375 8.50 9.75
2 1/2 2.88 4.875 5.125 5.125 5.125 6.50
3/4 1.06 2.25 2.625 2.625 2.625 2.75
1/2 0.84 1.875 2.125 2.125 2.125 2.50
1 1.31 2.625 2.875 2.875 2.875 3.125
6 6.62 8.75 10.50 9.75 9.875 11.375
1 1/4 1.66 3 3.25 3.25 3.25 3.50
4 4.50 6.875 7.625 7.00 7.125 8.125
12 12.75 16.125 18.00 16.50 16.625 19.625

LF2 Lap Joint Flanges Tolerance Chart

Property Tolerance
Length 10″, ±1/16″
Eccentricity 2 1/2″ ±1/32″
WT 18″, ±1/8″
OD 24″, ±1/16″
ID 10″, ±1/32″
Contact Face Diameter 1/16″, ±1/32″
Drilling ±1/16″

LF2 Material Flange Material Dimension

Standard Class Hole Bolt OD OD Size OD Circle
ISO 7005 PN16 16 90 M14 60.5
PN6 11 80 M10 55
PN10 14 95 M12 65
PN20
PN40
PN25
ASTM B16.5 ASTM 300 16 95 13 67
ASTM 150 89 13 60
ASTM 600 95 13 67
ASTM 900 22 121 19 83
ASTM 1500 22 121 19 83
AS 2129 Flange Table D 14 95 13 67
Table E
Table C
Table F
Table H 17 114 16 83
Table J 17 114 16 83

Temperature Chart of ASTM A350 Gr LF2 Spectacle Blind Flanges

Temp (°C) 300 600 1500 150 2500 900 400
350 37.6 75.1 187.8 8.4 313 112.7 50.1
400 34.7 69.4 173.6 6.5 289.3 104.2 46.3
250 41.9 83.9 209.7 12.1 349.5 125.8 55.9
300 39.8 79.6 199.1 10.2 331.8 119.5 53.1
500 11.8 23.5 58.8 2.8 97.9 35.3 15.7
150 45.1 90.2 225.4 15.8 375.6 135.2 60.1
450 23 46 115 4.6 191.7 69 30.7
200 43.8 87.6 219 13.8 365 131.4 58.4
100 46.6 93.2 233 17.7 388.3 139.8 62.1

Mechanical Properties of LF2 Lap Joint Flanges

Yield Strength (MPA)

250

Tensile Strength (MPA)

485–655

Elongation %

22-30


Hardness Max

197 HB



Equivalent Grades of A350 LF2 Socket Weld Flange

ASTM A350 LF2 Flanges Manufacturer In China Offers Flanges According to equivalent grades

UNS

K03011


DIN

TSTE 355 DIN 18103



ASTM A350 gr LF2 Normalized Flanges Chemical Composition

SULFER

0.040

PHOSPHORUS

0.035

CARBON

0.30

MANGANESE

0.60~1.35

SILICON

0.15-0.30

MOLYBDENUM

≤0.12

CHROMIUM

0.30

NICKEL

0.40

Physical Properties Of ASTM A350 LF2 CL1 Plate Flange

Property Metric Imperial
Thermal expansion 10.4 µm/m°C 5.78 µin/in°F
Thermal conductivity 21.6 W/mK 150 BTU in/hr.°F

Types OF Coatings Used For ASME SA 350 GR LF2 Orifice Flanges

Types OF Coatings Used For ASME SA 350 GR LF2 Orifice Flanges

Types Of Coatings

  • Oil Varnished, Yellow Zinc Coated
  • FBE Coatings, Alloy Coated
  • Electric Zinc Coated
  • Epoxy Coated



Does Yaye Industrial Offer custom ASTM A350 Lf2 Flanges?

  • Flanges Offers in Custom Sizes
  • Premium Material

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